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ASEE Engineering Case Library

This is the American Society for Engineering Education (ASEE) Engineering Case Library (ECL). The cases are accounts of real engineering work written for use in engineering education.The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. The library has been maintained by Rose-Hulman Institute of Technology and Carleton University. It continues under the sponsorship of the Design in Engineering Education Division (DEED) of the ...



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ASEE Engineering Case Library
by Geza Kardos
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The collapse of the Heron Road Bridge presents an excellent opportunity to impress upon the student the legal and ethical responsibilities required of the professional engineer. Part A narrates the tragedy by means of newspaper accounts and editorial comments. Part B is from the expert's report on the bridge failure. Part C describes the proceedings of the Coroner's Inquest and excerpts some of the more important and revealing testimony. Part D summarizes actions resulting from the...
Topics: Discipline: Civil, Area: Analysis, Area: Legal and Ethics, Area: Management, Assignment: Analysis,...
ASEE Engineering Case Library
by John E. Arnold
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The original 1953 case study has been digitized, paginate, made fully searchable, with a Table of Contents and Table of Figures, indices, with an introduction by John E. Arnold, Jr. (2016). Two articles by John E. Arnold (1952, 1953) on the case study are included in the appendices.
Topics: arnold, john e, case study, ecl, arcturus, ion, ceres, zylerium, chinese, typewriter, sick room,...
ASEE Engineering Case Library
by John Tarkov
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It took only fifteen seconds for the massive south arm of the Quebec Bridge to fall into the St. Lawrence River in 1907, but the prelude to the catastrophe began years before. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. The catalog was maintained by...
Topics: Discipline: Civil, Discipline: Other, Area: History, Area: Legal and Ethics, Assignment: Discussion
ASEE Engineering Case Library
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In 1958 Mr. Howard Ameson, rather fortuitously, cam across an idea for a device to clean swimming pools automatically. To pursue this idea further, he started a tiny company with $8,000 in 1960. By 1965 the device was in production and in 1969 his company had sales exceeding six million dollars. Mr. Ameson how heads the company he sold to Castle and Cooke Inc. for 9 million dollars in 1969. The case tells Mr. Arnson's story. This case study is part of the American Society for Engineering...
Topics: Discipline: Materials, Discipline: Mechanical, Discipline: Other, Area: Design and Development,...
ASEE Engineering Case Library
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Large tunnels are being bored under Melbourne for the city's new underground railway. Another tunnel is being constructed to carry sewage to the city's latest sewage treatment plant. The tunnel- boring operations have revealed a lack of knowledge about the forces generated when cutting through various rock strata. A programs of research into the mechanics of rock-cutting is therefore underway at the university of Melbourne, and the researcher Gray Bailey, is designing a machine for his...
Topics: Discipline: Mechanical, Discipline: Other, Area: Analysis, Area: Design and Development,...
ASEE Engineering Case Library
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"We spent the first three weeks of March 1996 trying to debug the system," said Keith, "but nothing we tried seemed to work. If we got the picture to focus, we couldn't get rid of the 'pincushion.' When we straightened out the 'pincushion,' we lost the focus again....We were up a blind alley. I wanted to try another approach." Mr. Keith McFarland, an electrical engineer in the Link Group of General Precision Corporation, was talking about Jet Propulsion Laboratory's Video...
Topics: Discipline: Electrical, Discipline: Other, Area: Design and Development, Assignment: Discussion
ASEE Engineering Case Library
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In the first of two parts a company engineer is asked to redesign a tape label dispenser so it can handle two different widths of tape. The second part then goes on to tell how he did the job. An instructor's note is available. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Inventions, Area: Management,...
ASEE Engineering Case Library
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The case you are about to read is fictional, but the problem concept is real and the need for careful value judgment is imperative - as it is in many situations that arise in the activities of a design engineer. You are about to become a key engineer and part owner in a small company in a foreign land. You are confronted with a total design situation in which you must assess the needs of men, design products to meet the needs, and study the effect of your efforts on satisfying these needs. Part...
Topics: Discipline: Other, Area: Design and Development, Assignment: Discussion
ASEE Engineering Case Library
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A hearing on the Air Force A-7D Brake Problem was conducted from 9:30 a.m. to 1:05 p.m. on 13 August 1969 under the chairmanship of Senator Proxmire. It was the result of accusations by two employees who claimed that the Goodrich Company had coerced them to change test records so that an unsatisfactory brake could be qualified for flight tests. The transcript of the hearing is available from the U.S. Government Printing Office, Washington, D.C. This case brings excerpts from the transcript,...
Topics: Discipline: Aero and Astro, Area: Legal and Ethics, Assignment: Discussion
ASEE Engineering Case Library
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When Andrew Lawrence, graduate engineer, was at loose ends about 1940, he got into the business of designing and manufacturing a superior air pistol which was then marketed by his brother who was in the sporting goods import business. He recollects this experience in this case. Instructor's Note is included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case...
Topics: Discipline: Other, Area: Analysis, Area: Design and Development, Area: Heat and Flow, Area:...
This study recounts the approach taken and the problems which arose in the design, construction, and testing of a 900 pound displacement submarine propelled by Lorentz electromagnetic forces in the surrounding sea. This project was carried out by a group of eight senior mechanical engineering students under the direction of the writer at the University of California at Santa Barbara in 1966. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case...
Topics: Discipline: Other, Area: Analysis, Area: Design and Development, Assignment: Discussion
ASEE Engineering Case Library
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After general agreement had been reached that the pipe should be cooled by circulating liquid the question for SLAC mechanical engineer Al Lisin was, how? In five parts this case unfolds the history of the design. Intended primarily for use in a graduate-level heat transfer course. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science...
Topics: Discipline: Mechanical, Area: Analysis, Area: Heat and Flow, Assignment: Analysis
ASEE Engineering Case Library
by John D. Bristor
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In the winter of 1953 a sudden partial stoppage of flow in the St. Clair and Detroit Rivers threatened to flood several communities along the banks. The Detroit District, corps of Engineers, U.S. Army, was responsible for constructing and maintaining navigation channels in the two rivers and also for doing all in its power to prevent floods along their banks. Colonel John D. Bristor, the District Engineer, was in charge of the District Office. Part A for this case describes the River-Lake...
Topics: Discipline: Civil, Area: Management, Assignment: Discussion
ASEE Engineering Case Library
by J.A. Alic
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The mechanical design of the surface sampler or soil scoop for the Viking mission to mars faced many uncertainties concerning the operating environment on Mars and the characteristic of the soil or rocks which the sampler would have to pick up. As a result, many difficult decisions had to be made by the project team during the course of the design and development effort. Conceptual design, engineering analysis, prototype construction and testing, and evaluation of alternatives were important...
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Topics: Discipline: Aero and Astro, Discipline: Materials, Discipline: Mechanical, Area: Analysis, Area:...
ASEE Engineering Case Library
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To increase the range of a twin engine airplane, extra fuel tanks must be designed and integrated with other systems. The project involves activities ranging from drafting and cost estimation, to vibration testing and lightning strike tests. Doug Marwill and two other engineers at Beechcraft spent about a year on the modification; they deal with vendors and subcontractors, as well as with the Federal Aviation Administration. The case is suitable for introductory and lower level courses in...
Topics: Discipline: Aero and Astro, Discipline: Electrical, Discipline: Mechanical, Area: Design and...
ASEE Engineering Case Library
by R.K. Pefley; O. Baskind; N.Y.N. Chu; J.A. Palomo; J.F. Rollings
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Four students learned about one of the many difficulties which beset the start-up of the San Francisco Bay Area Rapid Transit system. They relate what they learned from interviews and add their comments and evaluation. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science...
Topics: Discipline: Electrical, Area: History, Area: Legal and Ethics, Assignment: Discussion
ASEE Engineering Case Library
by J.E. Arnold; R.S. Welther
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State-of-the-art in ion exchange systems is described as background from which student design projects can be selected. A number of needs and problems are indicated to be awaiting solution.  Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for Engineering...
Topics: Discipline: Chemical, Area: Design and Development, Area: Inventions, Assignment: Invention
ASEE Engineering Case Library
by Geza Kardos
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George Boone is presented with the problem of determining the starting time of an A.C. induction motor driving a fan. the case is in three parts. Each may be assigned in such a manner as to lead the student through the various stages of analysis. 1. An upper and lower bound solution. 2. A graphical approximate solution. 3. A more exact integration. An Instructor's Note is included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL),...
Topics: Discipline: Electrical, Discipline: Mechanical, Area: Analysis, Area: Heat and Flow, Assignment:...
ASEE Engineering Case Library
by D.N. Howse; G. Kardos
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During the six years since obtaining his engineering degree, Paul Hait had risen with the corporation, Technology, Inc., to an engineering management position. He became dissatisfied with the large corporation and found himself getting impatient with the corporate life and the way time was passing. This is the way he tells the story of his "brutal" introduction to "entrepreneurship." This case study is part of the American Society for Engineering Education (ASEE) Engineering...
Topics: Discipline: Other, Area: Design and Development, Area: Inventions, Area: Management, Assignment:...
ASEE Engineering Case Library
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Mel Kruschke invented and fabricated a versatile, labor-saving boom system for Peterson Tractor Company's field mechanics. Their increased efficiency let Peterson provide faster, more extensive on-site maintenance for its customers. This case challenges the student's ability to isolate the necessary system components into appropriate free body diagrams. Instructor's Note included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL),...
Topics: Discipline: Mechanical, Area: Analysis, Area: Legal and Ethics, Area: Management, Assignment:...
ASEE Engineering Case Library
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In 1963 Earl A. Thompson received the Sperry Award for the development of the automatic transmission at General Motors. The case discusses a parallel development at General Motors by J.O. Almen, predating the work of Thompson which critically affected the success of that development. Shifting management priorities are presented which meant the success of one and not the other. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Inventions, Assignment: Discussion,...
ASEE Engineering Case Library
by C.O. Smith
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This case history describes a bus and automobile accident on a sonwy day with gusty winds. Analysis of the situation involves rigid body dynamics with some fluid mechanics relating to drag forces on the bus due to winds. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science...
Topics: Discipline: Civil, Discipline: Other, Area: Analysis, Area: Legal and Ethics, Assignment: Analysis
ASEE Engineering Case Library
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The design of a miniature compressor, its development through a number of prototypes, feasibility models and preproduction units and eventual successful marketing of the product are the subjects in this case in 3 parts: Part A, Invention; Part B, Development,; Part C, Industrial Design. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at...
Topics: Discipline: Mechanical, Discipline: Other, Area: Design and Development, Area: Inventions, Area:...
A team of four engineers are working to modify an existing video tape recorder so that it can be operated without depending on 60 cycle ac. current supply. Manchi Colah is one of the engineers on this team. The case is concerned with the experiments, calculations, and inquiries which he made in order to arrive at a suitable motor to drive the tape of this recorder. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program...
Topics: Discipline: Electrical, Area: Analysis, Area: Design and Development, Assignment: Analysis,...
ASEE Engineering Case Library
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The evolution of an effort to protect workers from excessive noise at a polymer grinding facility, from the discovery of high noise levels to the final engineering solution. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. The catalog was maintained by...
Topics: Discipline: Chemical, Discipline: Materials, Area: Analysis, Area: Management, Assignment:...
ASEE Engineering Case Library
by H. Clemens
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The rim of a large marine gear breaks during fabrication. Mr. George Reynolds, head of the metallurgical laboratory investigates the failure and prescribes a remedy. Part A describes the problem and Part B shows the steps which Mr. Reynolds and his staff took. Part A consists of 4 pages of text, 7 pages of graphic exhibits and 5 pages of a laboratory report prepared by Mr. Reynolds at Consolidated Dynamics. Part B consists of 1 page of descriptive text and a 13 page laboratory report by Mr....
Topics: Discipline: Materials, Production, Area: Analysis, Area: Heat and Flow, Area: Management,...
This design was accomplished under sever constraints of weight and of time. This case (which is a condensation of a case history originally written at the University of California at Berkeley) follows a sub-system through a series of different approaches tried by a succession of cognizant engineers, culminating in success. Part A gives background on the Mariner C spacecraft and its mission. Part B recounts the development of the solar panel deployment and damping systems. Exhibits show...
Topics: Discipline: Agriculture, Area: Analysis, Area: Computer, Area: Design and Development, Area:...
ASEE Engineering Case Library
by P.M. Lima
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A study of a bicycle accident which resulted from the front bicycle wheel dropping into a drainage grate. The rider, who suffered severe facial injuries, entered suit against the city seeking damages. The study was done to determine if the drainage grate constituted a hazardous condition in the roadway. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case...
Topics: Discipline: Civil, Discipline: Mechanical, Area: Analysis, Area: Design and Development, Area:...
ASEE Engineering Case Library
by Drew V. Nelson
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A case study concerning a products liability lawsuit which arose out of an industrial accident in which Plaintiff was severely injured while operating a large mechanical press. Emphasis is on engineering aspects of the case, as extracted from depositions of expert witnesses. Important elements of Plaintiff's trial brief, legal arguments, etc. are also presented. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be...
Topics: Discipline: Mechanical, Discipline: Production, Area: Analysis, Area: Legal and Ethics, Area:...
ASEE Engineering Case Library
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Before Charles Keyes finished his research on his MS in Electrical Engineering, he joined the Peace Corps and went to the Philippines. One of his projects there, a plan to raise water from the river to irrigate rice fields during the dry season, involved economic, political, and cultural factors along with some hydraulic engineering for which he was not well prepared. His letters to VITA, Brace Research Institute, and his professor at the University of Wisconsin are included in this case study...
Topics: Discipline: Agriculture, Discipline: Civil, Discipline: Mechanical, Area: Design and Development,...
ASEE Engineering Case Library
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A worker suffered a serious hand injury when he was cleaning out a trim blower. Was he just careless or is the manufacturer of the blower guilty of producing a defective design? Was the equipment placed in service with inadequate warnings? This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Legal and Ethics, Assignment: Design,...
ASEE Engineering Case Library
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I opened my mail to find a letter from Bob Stratton an attorney for whom I had appeared as an expert witness. :  A story told by Dr. MacGown, an engineering consultant, working as an expert in products liability litigation. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National...
Topics: Discipline: Mechanical, Area: Legal and Ethics, Assignment: Design, Assignment: Discussion
ASEE Engineering Case Library
by C.O. Smith
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Ed Barton Lost the use of four fingers on his left hand while using a portable circular saw which he had mounted on a table purchased and assembled by him. The story is told by Mike Faber, a professional engineer, retained as an expert witness by Bob Stratton, Ed Barton's attorney. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at...
Topics: Area: Design and Development, Area: Legal and Ethics, Assignment: Design, Assignment: Discussion
ASEE Engineering Case Library
by C. O. Smith
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"I have a client who had his left hand mangled while using a cut-off machine. Can you visit the plant and look at the machine for me?" This was a phone call from Max Birdsong, an attorney for whom I had investigated a number of cases. [As told by Dr. Faber] Instructors note included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program...
Topics: Discipline: Mechanical, Discipline: Production, Area: Design and development, Area: Legal and...
ASEE Engineering Case Library
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A steam turbine for naval service is checked for resistance to shock load by a newly prescribed method of analysis. A bearing cover is found to be overstressed. Part A explains the problem and shows a mathematical model of lumped masses and springs which represents the turbine for shock response of the turbine is calculated. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in...
Topics: Discipline: Mechanical, Area: Analysis, Area: Computer, Area: Design and Development, Assignment:...
ASEE Engineering Case Library
by B. Roth; K.H. Vesper
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A series of sub-cases describing punched cards and existing machines for punching them leads up to the problem of designing a new machine to operate on the frontier of maximum mechanical speed. Intended as background for a term project in design to acquaint the student with the main aspects of the problem and proven practices so he can proceed with his own design with a minimum of introductory time. 2 Note on Punched Cards 3(A) IBM and the Computer Industry 4(B) Making the IBM 514 Card Punch Go...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Inventions, Assignment: Design,...
ASEE Engineering Case Library
by D.O. Covault; G.A. Fleischer; P.F. Williams
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Part A of this case describes how IBM and San Jose try using digital computer to control city auto traffic. Part B describes the system, C describes strategies with which it was applied, and D gives the results which convinced the city to install a modified system for regular control of certain intersections. Suggestions for the instructor are included. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated...
Topics: Discipline: Civil, Area: Computer, Assignment: Discussion
ASEE Engineering Case Library
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Taken from published sources plus interviews with former engineers of the project, this historical description was prepared to illustrate engineering design and its role in society for a freshman. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for Engineering...
Topics: Discipline: Civil, Discipline: Electrical, Area: Analysis, Area: History, Area: Legal and Ethics,...
Ground control stations are equipped with instrumentation for sending to a satellite commands controlling its functions. Technicians must be able to handle large numbers of such functions (Perhaps 100 for a typical satellite) from a single control panel. To accomplish this task Philco-Ford engineers had designed a device called POK (Page Overlay Keyboard) which consisted of an array of buttons plus overlays or pages, which could adapt the panel to a variety of functions. Warren Deutsch, head of...
Topics: Discipline: Aero and Astro, Discipline: Other, Area: Design and Development, Area: Other,...
ASEE Engineering Case Library
by H.O. Fuchs; S. Bae
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Four uses for this case as seen by the authors are: Background for undergraduate exercises in strength of materials or design; exercises in estimation and approximation; questions of structural analysis; and, to show how plant engineering is accomplished in a rapidly developing country where money, skills, and materials are limited. Instructor's Note included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Management, Assignment: Analysis,...
ASEE Engineering Case Library
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In order to improve gyroscopes, Dr. Laub develops and verifies the equations which govern the behaviour of gas bearings, and then invents an improvement for such bearings. The NASA Technology Utilization Report on Elastic Orifices for Gas Bearings is an appendix to this case. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science...
Topics: Discipline: Mechanical, Area: Analysis, Area: Design and Development, Area: Heat and Flow, Area:...
ASEE Engineering Case Library
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"Our hunch is that the deep well over at Great Northern Steel collapsed from hydrostatic pressure in the annulus when the flow was shut off. We think our design will prevent that, but we want to be as sure as we can. We also want to be sure that we will spot any irregularities in operation early." Bob Martin, an engineer at Central Steel Corporation, was referring to a new 4,300 foot well being planned for disposal of "waste pickle liquor," a mixture of acids which is used...
Topics: Discipline: Chemical, Discipline: Other, Area: Analysis, Area: Design and Development, Assignment:...
ASEE Engineering Case Library
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The president of Ryan Enterprises talked about his philosophy with the casewriters who wrote ECL 190. This document, not really a "case," presents Mr. Ryan's ideas because of their value for engineering students. Rainiest Enterprises very successfully seeks out novel ideas and refine them to the point where they can be licensed for production and sales. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be...
Topics: Discipline: Other, Area: Inventions, Area: Management, Assignment: Discussion
ASEE Engineering Case Library
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Two system planning engineers solve the problem of specifying acceptable current loadings on a power company's high voltage transmission lines. Specifying the problem's unique features due to the company's line designs and area weather conditions making clear all assumptions, and reaching compromises between benefits of increased loadings and costs of line losses-these steps are shown in this case study and can be adapted to solving many other engineering problems. The case illustrates also the...
Topics: Discipline: Electrical, Area: Analysis, Area: Heat and Flow, Assignment: Analysis, Assignment:...
ASEE Engineering Case Library
by Robert McLaghlin
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This is the story of the Consumer Product Safety Commission's recall of a trouble light made by A.K. Electric Company. Reports on the investigation of a death involving a trouble light, and the subsequent labeling of the light by the commission as an "imminent hazard" give the reader an insight into the administrative and engineering processes of the CPSC. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be...
Topics: Discipline: Electrical, Area: Legal and Ethics, Assignment: Discussion
ASEE Engineering Case Library
by C.O. Smith
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A railroad maintenance worker claims to have injured his back while positioning guide wheels on railroad tracks. Discussed are several unique aspects of the litigation as well as the design of the guide wheels. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science...
Topics: Discipline: Mechanical, Area: Analysis, Area: Design and Development, Area: Legal and Ethics,...
ASEE Engineering Case Library
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This engineering case treats an indoor air pollution problem that occurred in a high-rise building. It illustrates the air migration problems that exist within high-rise buildings which can act as transport mechanisms for buoyant air pollutants. It also demonstrates some of the air engineering methods that can be applied to prevent or inhibit such migration problems. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be...
Topics: Discipline: Mechanical, Discipline: Other, Area: Design and Development, Area: Legal and Ethics
ASEE Engineering Case Library
by Aaron Baumgarten
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An experienced mechanical engineer was asked to design a smooth reliable drive to oscillate a long slender induction coil gently and continuously. The coil serves as a precision control element in a large linear accelerator. Part A of the case consists of an account of the first and second designs. Part B is a brief account of a difficulty which occurred several months later. An Instructor's Note is included. This case study is part of the American Society for Engineering Education (ASEE)...
Topics: Discipline: Mechanical, Area: Analysis, Area: Computer, Area: Design and Development, Assignment:...
ASEE Engineering Case Library
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A large segment of a blower fan assembly on an operation grain and feed mill flew off and killed the owner. This case follows the investigation into why the blower failed. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship...
Topics: Discipline: Agriculture, Discipline: Materials, Discipline: Mechanical, Area: Analysis, Area: Legal...
ASEE Engineering Case Library
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Mr. Dalny Travaglio, consulting design engineer, had developed and tested the conceptual design for a high accuracy, high repeatability cycle timer. This case presents the information required for carrying out the final mechanical design of the timer and is intended as an exercise in design for mass manufacture. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the...
Topics: Discipline: Electrical, Discipline: Mechanical, Discipline: Production, Area: Design and...
ASEE Engineering Case Library
by J.E. Arnold; G.H. Wood
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State-of-the-art in hospital beds, presenting background data on hospital beds as source material for student design projects. Students are to ferret out their own problems and then develop solutions. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for...
Topics: Discipline: Other, Area: Design and Development, Assignment: Design, Assignment: Invention
ASEE Engineering Case Library
by R. Stephen Ball; William B. Goodman; William J. Kennish
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This case history deals with the design and development of an airline passenger seat which emphasizes safety and comfort. With minor modifications, the seat will also be applicable to other transportation facilities where high acceleration levels are possible during accidents. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford...
Topics: Discipline: Chemical, Discipline: Mechanical, Area: Design and Development, Assignment: Analysis,...
ASEE Engineering Case Library
by John E. Arnold
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This is John E. Arnold’s first case to use an other-worldly, science-fictional format. It was intended to force his design students to think more imaginatively about product design solutions.
Topics: arnold, john e, case study, ecl, arcturus, ion, ceres, zylerium, chinese, typewriter
ASEE Engineering Case Library
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Kobe Inc. manufactures a positive displacement type triplex pump which is used in their hydraulic oil well pumping system. To achieve reliability in these pumps, which must operate continuously at high pressures (up to 30,000 psi.), Kobe engineers must continually refine their design. As an example of such refinement, this case follows the development of the pump plunger and liner over a period of 24 years. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a...
Topics: Discipline: Mechanical, Discipline: Production, Area: Design and Development, Area: Graphics, Area:...
ASEE Engineering Case Library
by J.M. Henderson
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A prototype baled hay hauler included translating individual bales from one position in the hauler to another. The case documents the design of a means to mechanically grasp the bales during the translation. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation....
Topics: Discipline: Agriculture, Discipline: Mechanical, Area: Design and Development, Assignment: Design,...
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This case describes the efforts of Duke Power Company to obtain an operating license for a nuclear power plant in the aftermath of the Three Mile Island accident. Particular focus is placed on the difficulties encountered in meeting NRC's new design requirements for control of accidental hydrogen generation. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case...
Topics: Discipline: Nuclear, Area: Legal and Ethics, Area: Management, Area: Public Policy, Assignment:...
ASEE Engineering Case Library
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This case provides a brief look at the methodology of Value Engineering. A leveling screw for the IBM 1311 disk storage drive was assigned to students in an IBM Value Engineering Seminar. The students applied their newly learned techniques to redesign the levelling screw to reduce cost while maintaining function. Their solution was so successful that it was put into production on many IBM systems resulting in over one million dollars in savings. This case study is part of the American Society...
Topics: Discipline: Mechanical, Area: Design and Development, Area: Management, Assignment: Discussion
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This case relates a number of instructive events from the development of the highly successful Explorer satellite. It was designed to spin about its axis of minimum moment of inertia at a rate of about 700 RPM. But anomalies in the signals received from its antenna led to the conclusion that after about one orbit it changed to a rotation about its axis of maximum moment of inertia at a rate of about 120 RPM. Background and observed data are given in Part I. A dynamic analysis which explains the...
Topics: Discipline: Aero and Astro, Discipline: Electrical, Area: Analysis, Assignment: Analysis,...
ASEE Engineering Case Library
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The first part of this case describes the original control system and reasons for adding a variable-stability auxiliary system to the Bell X-14 experimental aircraft. By means of excerpts from the original project notebook, the student is provided with the technical requirements of the system. The second part includes the project notebook calculations for the first part and poses the additional problems of writing a preliminary progress report, designing a simulator for the control system, and...
Topics: Discipline: Aero and Astro, Discipline: Other, Area: Analysis, Area: Design and Development,...
ASEE Engineering Case Library
by C.O. Smith
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A workman changing a flat tire on a large earth mover was injured, eventually losing a leg. The manufacturer was then sued. The case history follows the court hearings, providing details and opinions from both sides of the incident, allowing the student to be a member of the jury who decides the outcome. Questions are provided in the case. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb...
Topics: Discipline: Materials, Discipline: Mechanical, Area: Analysis, Area: Legal and Ethics, Assignment:...
ASEE Engineering Case Library
by William S. Chalk; Ivan A. Shirk; Robert B. Thornhill
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Varian Associates use a liquid nitrogen container made of polystyrene with metal inserts on their cold trap vacuum pumping system. This container gave rise to a number of customer complaints. Paul Hait was assigned the problem and solved it. Part A presents historical background with examples of trouble reports. Part B relates Paul Hait's attack on the problem and its solution. Part C draws conclusions and examines future prospects. Part of the ASEE Engineering Case Library (ECL), which can be...
Topics: Discipline: Chemical, Discipline: Materials, Discipline: Mechanical, Discipline: Production, Area:...
ASEE Engineering Case Library
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Peter Sawchuck is required to design a two-speed gear box for a cold rolling mill coiler. He undertakes the design of a one-off unit that will satisfy the requirements. The basic gear design is governed by AGMA specs, but the remaining components are governed by reliability and economic considerations. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program...
Topics: Discipline: Materials, Discipline: Mechanical, Discipline: Production, Area: Analysis, Area: Design...
ASEE Engineering Case Library
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A study of the efforts of an electric utility company to adopt a new approach to controlling emissions from a coal-burning power plant. The technical issues are examined as well as the associated legal and regulatory controversies. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the...
Topics: Discipline: Chemical, Discipline: Civil, Discipline: Mechanical, Area: Analysis, Area: Design and...
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This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a <a href=“https://archive.org/details/ECL-zip”>300mb zip file</a>. The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. The catalog was maintained by Rose-Hulman Institute of Technology and Carleton University. It continues under the sponsorship...
Topic: Discipline: Mechanical
ASEE Engineering Case Library
by R.H. McKim; J.K. Williams
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Four brief two and three page cases describe situations where innovation seems to be called for. Intended as calisthenics for student imagination in teaching product design. (A) Patient Room Door Handles (B) Opening Sliding Glass Doors (C) Surgical Instrument Cabinet Doors (D) Label Dispenser Design Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the...
Topics: Discipline: Other, Area: Design and Development, Area: Inventions, Assignment: Design, Assignment:...
A research engineer develops a method for more precise location of intermittent arcing faults on underground cables by applying transmission line theories to a problem found to be highly constrained by non-textbook factors (non-linearities, complicated geometry, etc.), and by employing extensive laboratory and field experimentation. In the course of field testing, an observation is made which radically alters the direction of the project. This case study is part of the American Society for...
Topics: Discipline: Electrical, Area: Analysis, Assignment: Analysis, Assignment: Discussion
ASEE Engineering Case Library
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This case history relates the chain of events leading to the "explosion" of a stainless steel fire extinguisher which severely injured the individual handling it at the time. Investigation into the cause of the accident was necessary since the injured party entered suit. Before settlement was reached, five defendants were involved. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb...
Topics: Discipline: Materials, Area: Analysis, Area: Legal and Ethics, Assignment: Analysis, Assignment:...
ASEE Engineering Case Library
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This case is a study of operator protection and guarding on a mechanical power press. An analysis of modifications made to the press with the evolution of safety standards is given. A study of an engineering investigation for a product liability suit is presented. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in...
Topics: Discipline: Mechanical, Discipline: Other, Area: Legal and Ethics, Assignment: Analysis,...
ASEE Engineering Case Library
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A 100 foot bridge is needed to span a creek for a road leading to a 1,500 megawatt power station under construction. Using the included bridge design handbook data the engineer must choose among several alternative standard designs in the light of the purpose and circumstances of the bridge, time limitations, and tradeoffs between cost and other factors. Intended to be suitable for freshmen to use, the case requires no advanced technical skills or knowledge. Part of the ASEE Engineering Case...
Topics: Discipline: Civil, Area: Analysis, Area: Design and Development, Assignment: Analysis, Assignment:...
ASEE Engineering Case Library
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The Fairdeal Construction Company bid a sewage treatment plant for the City of Littleville based upon a vague contract drawing and information supplied by the architect-engineer. Underground conditions as to rock and subsurface water were considerably different from those upon which the bid was based. The Fairdeal Construction Company completed the job and submitted a claim to the City of Littleville. An Instructor's Note is included. This case study is part of the American Society for...
Topics: Discipline: Civil, Area: Legal and Ethics, Area: Other, Assignment: Discussion
ASEE Engineering Case Library
by G. Kardos
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When plastic hard hats were returned to Owl Equipment Company because of failure of the head harness holders, they began a search for the causes. The problem and its investigation are given in Part A. Part B is in the form of a report to Owl Equipment on the probable cause of failure and its correction. Instructor's Note is included. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip...
Topics: Discipline: Materials, Discipline: Other, Area: Analysis, Area: Legal and Ethics, Assignment:...
ASEE Engineering Case Library
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The IBM 2321 is a vast storage device which reads and writes data on a magnetic strip. These strips are stored in cells and mechanically taken from the cells for read-write operations and then returned. With the 2321 in full production and in the field, the pickup-head link began to fail. After a metallurgical fix of the link failed, stresses due to three independent loads were re-examined. Later the link was redesigned, but the pin on the end of the link began to fail. Further redesign...
Topics: Discipline: Materials, Discipline: Mechanical, Area: Analysis, Area: Computer, Area: Design and...
ASEE Engineering Case Library
by G. Kardos
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Steve Vamos, a mechanical engineer, was faced with the problem of modifing the location of the wheels of a trailer for a back-hoe. Discussing the problem with his former design professor makes him realize that the problem could be handled with a few measurements and the analysis that he had learned in the first course in statics. The case is in three parts A B & C. An instructors note is included. This case study is part of the American Society for Engineering Education (ASEE) Engineering...
Topics: Discipline: Civil, Discipline: Mechanical, Area: Analysis, Assignment: Analysis, Assignment:...
ASEE Engineering Case Library
by J.E. Arnold
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Illustrates the state-of-the-art in boxcar construction, giving dimensional and other data on the cars and suggesting some disadvantages which may suggest a variety of possible design projects by students. Part of the ASEE Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program originated at Stanford University in 1964 with the support of the National Science Foundation. It continues under the sponsorship of the American Society for...
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Topics: Discipline: Mechanical, Area: Design and Development, Area: Inventions, Assignment: Design,...
ASEE Engineering Case Library
by Michael Helmey
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Co-op student Michael Helmey was asked to investigate the merits of replacing a steam ejector on an ash conveying system with a motor drive vacuum pump. He finds that besides his knowledge of fundamentals, he can use good advice from a vendor and from another plant with ash handling problems. This case study is part of the American Society for Engineering Education (ASEE) Engineering Case Library (ECL), which can be downloaded in full as a 300mb zip file . The Engineering Case Program...
Topics: Discipline: Chemical, Discipline: Mechanical, Discipline: Production, Area: Design and Development,...